Introducing the hamster running ball, a must-have accessory for every hamster owner This unique transparent ball allows you to observe and interact with your furry friend while they exercise, adding an extra element of fun to playtime. With multiple vents, it ensures proper ventilation and prevents stuffiness, keeping your pet comfortable and healthy. The thickened shell not only adds durability but also gives it a fashionable appearance. The buckle design makes it easy to take on and off, while the rotating cover securely locks in place, ensuring your hamster's safety during their run. This running ball provides a fun playground for hamsters, gerbils, mice, and other small animals, allowing them to burn off excess energy and stay fit. Don't miss out on this essential accessory that will keep your pet entertained and healthy Item Name: Hamster Running Ball Material: Plastic Features: Relieve Boredom, Buckle Closing, Multi-hole Breathable Size Details: S, Diameter: 12cm/4.72" (Approx.) M, Diameter: 16cm/6.3" (Approx.) L, Diameter: 18cm/7.09" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Hamster Running Ball